CN203929624U - Infrared moisture test experience instrument - Google Patents
Infrared moisture test experience instrument Download PDFInfo
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- CN203929624U CN203929624U CN201420365608.XU CN201420365608U CN203929624U CN 203929624 U CN203929624 U CN 203929624U CN 201420365608 U CN201420365608 U CN 201420365608U CN 203929624 U CN203929624 U CN 203929624U
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Abstract
The utility model relates to a kind of infrared moisture test experience instrument, comprise experiment instrument main frame, light collection ball and infrared light supply, on experiment instrument main frame, be provided with the aobvious light intensity demonstration of five-digit number, the aobvious moisture demonstration of four figures, signal input port, infrared light supply port, wavelength selection knob, measurement of species selection knob, measure button and usb signal communication port; In experiment instrument main frame, there is microprocessor master chip, signals collecting and amplification, signal condition, A/D conversion, switch control, driving and display circuit.This experiment instrument adopts multiple infrared light supply and high-performance microprocessor chip, it is a kind of simple in structure, experiment instrument cheaply, can realize the function to the water content detection of many kinds of substance, be suitable for measurement and the education experiment of the courses such as biology, food quality, information optics.
Description
Technical field
The utility model relates to a kind of infrared moisture test experience instrument, belongs to the field of electric detective technology application and experimental applications.
Background technology
In manufacture of materials departments such as food, tobacco, weaving, paper, moisture is directly and indirectly one of basic test ratings of many products, the content of various substance moisture contents is important parameters of these materials required understanding during production, transportation, storage, transaction and processing, and the method for common determination of moisture mainly contains: seasoning, conductance method, capacitance method, microwave method, near infrared light collimation method etc.
Along with scientific and technical develop rapidly, the application of infrared light analytical technology and near-infrared measuring instrument is more and more general and extensively, it have amount of samples few, do not destroy sample, without sample is carried out to chemical treatment, and can carry out fast the advantages such as Measurement and analysis.But these infrared light instruments are mostly the light sources that adopts continuous spectrum, by various light-dividing devices, will after continuous spectrum light splitting, interact with test substance, or by the complex light light splitting again after interacting with test substance, the feature such as the debug process that exists light path complexity, instrument is loaded down with trivial details, expensive, is difficult to large-scale popularization and application.
Due to infrared analytical instrument price, the chance that so a lot of students do not take action on one's own, is difficult to well understand basic skills and the technology that infrared light application adopts simultaneously.
Utility model content
For the deficiency of existing measurement and experimental apparatus, the infrared moisture test experience instrument of the utility model design, is a kind of simple in structure, infrared light detection experiment instrument cheaply, can complete the detection to the moisture of multiple product.The illumination of the near-infrared band that first it produce infrared light supply is mapped in light collection ball in the measurement of species in measuring box, and generation diffuses, the infrared eye diffusing after light collection ball is collected by photoelectric sensing receives, infrared eye receives light signal, produce faint current signal, and transfer signals to after experiment instrument main frame, through amplifying circuit, signal is amplified, and through signal condition, being input to A/D module converts becomes digital voltage signal and is transferred to microprocessor to carry out computing, finally by two charactrons, show light intensity and the moisture result that output is measured respectively.
The utility model comprises experiment instrument main frame, light collection ball and infrared light supply, is provided with the aobvious light intensity demonstration of five-digit number, the aobvious moisture demonstration of four figures, signal input port, infrared light supply port, wavelength selection knob, measurement of species selection knob, measures button and usb signal communication port on experiment instrument main frame; In experiment instrument main frame, there is microprocessor master chip, signals collecting and amplification, signal condition, A/D conversion, switch control, driving and display circuit, collection, computing and demonstration for settling signal, its signal acquisition circuit, amplifying circuit, signal conditioning circuit, A/D change-over circuit, microprocessor, display circuit are connected successively, and its microprocessor, ON-OFF control circuit, driving circuit, infrared light supply are connected successively.
Its light collection bag is drawn together spherical shell, base, infrared light supply, infrared eye and measuring box, its measuring box be placed in light collection ball spherical shell under, on measuring box, there is screw thread, match with the upper screw thread of spherical shell, be convenient to change measurement of species, infrared light supply has three, there are three kinds of different wave lengths, be placed in the place that spherical shell upper right side and vertical direction depart from 8 ° of angles, infrared eye level is placed in the spherical shell center line left of light collection ball, its below is provided with a slice resistance light plate washer, to stop light infrared light directly to enter infrared eye.
The major part of the light collection ball that the utility model adopts is the complete spherical shell of a hollow, and the measuring box of dress detection material is arranged at its positive bottom, its light collection spherical shell have base below.The inwall coating white diffuse reflector of light collection spherical shell, and the diffusion of ball inwall each point is even forms light source after material after testing in the optical superposition only being produced by multiple reflections light of ball wall reflection.
The MSP430F479 that the microprocessor ShiTI company that the utility model adopts produces.It is the microprocessor of a super low-power consumption, 16 RISCCPU kernels of its quadrature based on real, have 16 can full addressing of monocycle 16 bit registers, 3 different clock signals, 6 kinds of mode of operations are changed at any time, power consumption electric current is very little.And can be placed in battery saving mode, and in the mode of interrupting, wake up, reduce as much as possible power consumption.MSP430F479 has and in powerful operational performance, sheet, includes accurate hardware multiplier, has the FLASH of 60KB, the RAM of 2KB, the conventional resource such as A/D converter, precision comparator of 16.By the JTAG debugging interface in sheet, get final product the debugging of completion system coding, development environment convenience and high-efficiency.
Measuring principle of the present utility model is the relation to the near infrared strong absorption of specific wavelength according to the hydrone in material, and the infrared reflection method that this experiment instrument adopts is to utilize the near infrared light intensity of measured matter surface reflection to determine the moisture of tested article.The one-level frequency multiplication of the O-H key stretching vibration of pure water is about 1440nm, and secondary frequency multiplication, at 960nm, also has two sum of fundamental frequencies to lay respectively near 1940nm and 1220nm.So this experiment instrument adopts three kinds of wavelength methods, choose the infrared light supply of three kinds of different wave lengths, one is absorbed the reference wavelength 1950nm of not too strong wavelength and the light source of 960nm by the light source of the measurement wavelength 1450nm wavelength of the wavelength of water strong absorption and two by water, after testing with calculate these three catoptrical the Relationship of Light intensity of wavelength, thereby obtain the ratio value of material contained humidity accurately.
Accompanying drawing explanation
Fig. 1 is experiment instrument outside drawing, wherein 1 be that the aobvious light intensity of five-digit number shows, the 2nd, signal input port, the 3rd, infrared light supply port, the 4th, wavelength is selected knob, and the 5th, measurement of species is selected knob, the 6th, measure button, the 7th, the aobvious moisture demonstration of four figures, the 8th, usb signal communication port.
Fig. 2 is light collection ball schematic diagram, wherein 9 are spherical shells, the 10th, base, the 11st, infrared light supply, the 12nd, infrared eye, the 13rd, measuring box, the 14th, light source control line, the 15th, signal wire, the 16th, resistance light plate washer.
Fig. 3 is circuit system schematic diagram.
Embodiment
By reference to the accompanying drawings, illustrate work and the performance of infrared moisture test experience instrument below.
Light collection ball of the present utility model adopts 8 ° of directions of diffused illumination measured by light, light collection ball by light after multiple reflections, be scattered in equably and gather ball inside, make it to become a uniform light source of ideal, infrared light is had to nearly 99% reflectivity, infrared eye level is placed in the left side of light collection ball spherical shell center line, and is thereunder provided with a slice resistance baffle plate, has avoided the light reflection of measurement of species directly to enter detector.
The infrared eye of this experiment instrument, as preferably, is chosen in the G8372 type InGaAs photodiode that near-infrared region responds responsive Bin Song company, and spectral response range is 900nm-2100nm, fast response time.
Signal wire on its light collection ball is connected with the signal input port on experiment instrument main frame, for collection signal being transferred to experiment instrument main frame; Light source control line on its light collection ball is connected with the infrared light supply port on experiment instrument main frame, for the Kai Heguan of instrument host computer control infrared light supply by experiment.
The utility model is built together and has been found the measurement model of milk powder, rice, flour three kinds of measurement of species, and selects knob to carry out the selection of different measuring substance classes in conjunction with measurement of species.
The moisture scope of the various measurement of species in actual experiment 1%～20%, in water content detection of the present utility model is calculated, adopts the water model of multiple linear regression equations generally, and it is:
Y＝AX±A
1X
1±A
2X
2
In formula, Y is the moisture of each material of measurement, and X is the light intensity output under 1450nm wavelength, X
1for the light intensity output under 1950nm wavelength, X
2for the light intensity output under 960nm wavelength, A, A
1, A
2parameter for model.In experiment, each parameter is input microprocessor.
Signal input and the infrared light supply port of this experiment instrument all adopt multicore aviation socket, and USB is the New Bus standard of microcomputer interface, its convenient easy-to-use, reliability high, and the interface mode of applicable this experiment instrument, is conveniently connected with computer.
During experiment instrument is used, in conjunction with wavelength, select knob to have that three wavelength are used separately and four kinds of patterns of three wavelength Automatic continuous variations can be selected.
This experiment instrument is a kind of simple in structure, experiment instrument cheaply, can realize the function to the water content detection of many kinds of substance, is suitable for measurement and the education experiment of the courses such as biology, food quality, information optics.
Claims (3)
1. an infrared moisture test experience instrument, comprise experiment instrument main frame, light collection ball and infrared light supply, it is characterized in that: on experiment instrument main frame, be provided with five-digit number and show light intensity demonstration (1), the aobvious moisture demonstration of four figures (7), signal input port (2), infrared light supply port (3), wavelength selection knob (4), measurement of species selection knob (5), measurement button (6) and usb signal communication port (8); In experiment instrument main frame, there is microprocessor master chip, signals collecting and amplification, signal condition, A/D conversion, switch control, driving and display circuit, collection, computing and demonstration for settling signal, its signal acquisition circuit, amplifying circuit, signal conditioning circuit, A/D change-over circuit, microprocessor, display circuit are connected successively, and its microprocessor, ON-OFF control circuit, driving circuit, infrared light supply are connected successively.
2. infrared moisture test experience instrument according to claim 1, it is characterized in that: its light collection bag is drawn together spherical shell (9), base (10), infrared light supply (11), infrared eye (12) and measuring box (13) and formed, its measuring box (13) is placed under the spherical shell of light collection ball, its infrared light supply has three, there are three kinds of different wave lengths, be placed in the place that spherical shell upper right side and vertical direction depart from 8 ° of angles, infrared eye level is placed in the spherical shell center line left of light collection ball, and its below is provided with a slice resistance light plate washer.
3. infrared moisture test experience instrument according to claim 1, is characterized in that: the signal wire (15) on its light collection ball is connected with the signal input port (2) on experiment instrument main frame, for collection signal being transferred to experiment instrument main frame; Light source control line (14) on its light collection ball is connected with the infrared light supply port (3) on experiment instrument main frame, for the Kai Heguan of instrument host computer control infrared light supply by experiment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420365608.XU CN203929624U (en) | 2014-07-02 | 2014-07-02 | Infrared moisture test experience instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420365608.XU CN203929624U (en) | 2014-07-02 | 2014-07-02 | Infrared moisture test experience instrument |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203929624U true CN203929624U (en) | 2014-11-05 |
Family
ID=51825423
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420365608.XU Expired - Fee Related CN203929624U (en) | 2014-07-02 | 2014-07-02 | Infrared moisture test experience instrument |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203929624U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110596314A (en) * | 2019-09-09 | 2019-12-20 | 深圳冠亚水分仪科技有限公司 | Operation method and control system of moisture meter control software |
-
2014
- 2014-07-02 CN CN201420365608.XU patent/CN203929624U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110596314A (en) * | 2019-09-09 | 2019-12-20 | 深圳冠亚水分仪科技有限公司 | Operation method and control system of moisture meter control software |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141105 Termination date: 20150702 |
|
| EXPY | Termination of patent right or utility model |